Chaedt



(No Model.) 2'S he etsSheet 1. H. F. PARSONS 8: H. BORUHARDT. MECHANICAL MOVEMENT. v S

No. 281,720. 8 r Patented July 24,1883.

ATTORN'EYi Fzyi.

. .4 I A 2 2 Q I i F J WITNESSES: INVENTURS N., PETERS, Pmwnmu m Ila-ma ma. 11a

(No Model.) V Y l -2Shee ts-Sheet.2.

P; PARSONS &- H. BO'RO HARDT. I

' I MECHANICAL MOVEMENT.

N0. 28"1;720. Patented July 24, 1888.

mm I

ATTORNEY.

UNITED STATES PATE 'r- OFFIGE.

HENRY F. PARSONS, OF SAN FRANCISCO, CALIFORNIA, AND HUGO BOR- CHARDT, OF BRIDGEPORT, CONNECTICUT; SAID PARSONS ASSIGNOR TO DANIEL COOK, OF SAN FRANCISCO, CALIFORNIA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 281,720, dated July 24, 1883. Application filed June 12, 1882. Rnnewed April 14, 1883. (No model.)

To aZZ whom it may" concern.-

Be it known that we, HENRY F. PARSONS and. HUGO BOROHARDT, citizens of the United States of America, residing, respectively, at the city and county of San Francisco, California, and Bridgeport, Fairfield county, Connecticut, have invented certain new and useful Improvements in Mechanical Movements and Devices for Supporting the Same, of whichthe following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in mechanical movements and devices for supporting the same when in operation,

I 5 and it consists in the construction, combination, and arrangement of parts hereinafter more particularly described and claimed, whereby the movement of a handle in'one direction gives a gradual upward movement to a hammer or similar device and a rapid return motion to the same, which movements may also be repeated at the reverse of the handle, as will be more fully hereinafter shown.

2 5 i In the drawings, Figure 1 represents a side View, partly in section, of a machine provided with my improvement; Fig. 2, a detail, rep resenting a modification of a joint shown in Fig. 1. Fig. 3 represents a plan view of the machine, Fig. 4., a sectional view through the line 2 z in Fig. 1; Fig. 5, asectional View of the cams; and Fig. 6, a detail sectional perspective view, with the cams broken apart to show the construction of the inner faces.

A shows the supporting-frame, which may be hinged at A and extend backward to form a single leg; or it may be forked, so as to form two legs, in which case the hinged joint may be made as in Fig. 2, so as to turn to admit of 0 the frame standing firmly on uneven ground. This leg or legs may be, if preferred, formed in one piece with the back section of the 7 frame, or it may be made, as shown in the drawings, with a removable leg, B, which may 5 be adjusted to any desired height. The front of the frame should be forked to admit of the attachment and operation of the mechanism hereinafter described, and the fork may either extend downward as well as forward, and have which the casting oscillates.

whose general form is clearly shown in Fig. 6,

short removable and adjustable supporting- 5o legs similar to those used in the rear section,

or it may be extended downward until the fork itself rests on the ground or the fork may extend forward horizontally, and long wroughtiron solid or tubularlegs may be secured in 5 sockets formed in the .branches of the fork, which legs may form supports for other parts of the mechanism. At C is shown a saddle supported on the frame by a spring, D, both of which may be adjusted by set-screws, as shown.

To the frame is pivoted the lever E, which carries the helve F of the hammer G, and is provided with a spring, H, the other end of which is attached to the under side of the frame A.

The hammer is operated in the following manner: a is a handle situated above and in front of the saddle C, which handle is adapted for both hands of the operator. The handle a is provided with arms b b, which fit into sockets on a casting, which consists of the two side portions, 6 and 6, one of which is situated on each side of one end of the lever E. They are rigidly connected together at the points 8 r. The casting eef is attached to the frame by the shaft 0, which extends through both, and on On the inside surfaces of the casting e e are formed cams,

SO and are for the purpose of converting a single oscillation of the handle a 72 into two motions of the lever E, which is accomplished in the following manner: Through the long arm of the lever E extends a pin or bolt, a, which is free to move endwise in said arm, and is rather longer than the width -of the arm of the lever at that point, so as to project out 011 either side thereof. The pieces 6 e are so connected as to be just the width of the lever E apart but the interior surfaces of the pieces 6 e are cut away. so as to form cams z j, on which the projecting end of the pin a may rest. When the motion of the piece 6 is in the direction of the arrow as in Fig. 6, the end of the pin projects over the cam-surface on the piece'e, so that the motion of the piece 6 causes the end of the pin a to advance up the cam-surface from z" to j, and

of course a corresponding motion is imparted to the lever ll. \vheifthc end of the pin (0 reaches the point j, the camsurface is so formed as to suddenly release the end of the pin a, and the spring H reverses the motion of the lever, thus driving downward the pin a. In falling the end of the pin a impinges against the inclined surface from j to k, which forces the pin back longitudinally through the lever E until the opposite end of the pin projects over the cam-surfaces of the piece a, which camsurface will catch the pin at a point about i and prevent it from falling farther. At the same time the end of the pin next the piece 0 is forced in flush with the side of the lever E, so as not to engage with the piece 0 in any way. \Vhen the pin has reached such a position that its end projects over the camsurface at 17, the casting of which the pieces 0 c are a part is moved by the handle a b, so that the piece 0' moves in the direction of the arrow 9 which motion causes the end of the pin a to advance up the cam-surface from i toj. \Vhen it reaches j it is allowed to fall again, and in so doing the pin is forced back by the incline betwcenj and k until it occupies the position from which it started, so that one end extends over the camsurface of c at i, as shown in Fig. (5.

From the above explanation it is plain that when the piece 0 e is oscillated on the shaft 0 by means of the handle a I) the lever E, and with it the hammer-arm and hannner, will be reeiprocated twice for every complete reciprocation of the handle a b, and that the upward movement of the handle will be gradual, while its downward movement is unimpeded and rapid. The saddle is secured to the frame A in such a position that the lever b will be within the reach of the operator, who may rest his feet upon the foot-rests I I, projecting from the frame or from the legs thereof.

The operation of the machine is as follows: The operator, having placed the machine in the desired position, takes his seat upon the saddle (1, places his feet upon the projections I I, and then takes hold of the handle a with both hands and moves it backward and forward. This motion of the handle a is communicated by the arms I) to the cam-piece c c, which, through. the medium of the mechanism before described, operates the lever E, and thus causes the hammer to give one blow at each forward motion of the handle a I) and another blow at the reverse movement thereof, so that one complete motion of the handle gives two complete motions to the lever E and 11ammer G.

In the form shown in the drawings and the foregoing description the machine may be used for giving motion to a hammer for use as an olivcr in blacksmith-shops by placing it alongside an anvil, as shown in dotted lines in Fig. 1, or for any other purpose where a succession of rapid motions are required; or the handle might be dispensed with, and one of the arms I) connected to the piston of a steamengine and applied to working heavy triphammers.

Instead of the sliding pin or bolt 0 herein shown, a swinging bolt may be used made in the form of a reversed T, and pivoted at the upper extremity of its vertical arm to thelever E or other equivalent device.

It is obvious that the pin or bolt, instead of being connected to a lever having an oscillating motion, may be used to give a rectilinear motion to any other devices which may require reciprocating motions. The hinging of the frame in two parts, as shown, enables the frame to be folded together, to occupy less space, and by placing the seat substantially in the position shown the weight of the operator serves to keep the frame steady and to prevent the rising of the frame at the moment of striking, which would sometimes occur when a powerful spring is employed to give a hard blow. The use of the rests I I will be found particularly useful, as the operator can thereby brace himself against them, and thus exert his whole force 011 the handle.

Instead of pivoting the working mechanism directly to the frame, wein some cases pivotit to a single arm connected to vertical supports in front of the machine, in which case the single arm passes through the aperture in the casting between the cross-bars r s and into a recess in the under side of the lever F.

I11 lieu of the two cams having opposing surfaces, as shown in the drawings, a single cam may be employed, which would give but a single complete motion of the hammer for each complete vibration of the hand-lever, in which case, after the pin had fallen and been pushed in one direction endwise, as in the mannerbefore described, the hand-lever would be reversed and the pin would not engage with any cam when the hand-lever was moving backward; but when the pin reaches the point from which it started a spring or some similar contrivance might be arranged to force it endwise in the reverse direction, so as to engage with the cam again.

For some styles of machinery the arrange ment of the parts may be reversed, so as to have the cams stationary, and the lever or other devices carrying the endwise-moving pin vibrated back and forth over the cams, by which means the same effect would be carried out without departing from the spirit of our invention.

The main features of this invention are shown in two other applications of ours now pending, (serial Nos. 41,849 and 41,850,) but the devices herein described and shown are not claimed, broadly, in such applications.

lVe do not limit ourselves to the exact means shown for moving the pin or bolt endwise, as any other known device may be employed for this purpose.

\Vhat we claim as new is- 1. The combination, with a level, of two IIO cams rigidly connected therewith, both arranged on the same side of the fulcrum on which the cams turn, and suitable connections, substantially as described, with the device to be operated, whereby said device is moved twice to each oscillation of the lever, as set forth.

2. The combination, with two cams having their working-faces in opposite directions, of a bolt engaged with and released from each cam alternately, substantially as described.

3. The combination of the endwise-moving pin with a cam situated at one end of the pin,

and formed, substantially as described, so that the cam will raise the pin the height desired and then let it fall, and the pin will be forced endwise out of gear with the cam preparatory for motion in the other direction.

4. The combination of the endwise-moving pin with two cams, one situated at each end of the pin and formed the reverse of each other, substantially as described, so that by motion in one direction one of the cams will raise the pin to the height desired and let it fall, and in so doing will force it endwise into gear with the second cam and out of gear with the first cam, so that motion in the other direction will cause the second cam to raise the pin and let I force it to one side, substantially as and for the purpose described.

, 7 The combination,with the lever E and the sliding pin a, of the vibrating cam-pieces e e, provided with reverse cam-surfaces i j k and ij" 70", substantially as and for the purpose specified.

8. The combination of asuitable frame pro vided with a seat, and mechanism constructed to give the device it operates a gradual movement in one direction and a sudden return motion, with a handle for moving said mechanism, constructed and arranged to be operated by the hand of the person in the seat, attached to the frame, whereby said frame is held down against the rebound by the weight of the person operating the handle, substantially as described.

9. The combination of a suitable frame, a saddle for the operator supported on a central bar of said frame, and an operating mechanism constructed to givethe device it operates a gradual movement in one direction and a sudden return motion, with a lever connected to said operating mechanism, constructed and arranged to be operated by the hand of the person in the seat, all substantially as described.

10. The combination of a suitable frame, a saddle for the operator, attached to said frame, an operating mechanism constructed to give the device it operates a gradual movement in one direction and a sudden return movement, and alever connectedto said operating mechanism, constructed and arranged to be operated by the hand of the person in the seat, with footrests on the frame, whereby the operator can brace himself in operating the lever, substantially as and for the purpose specified.

11. The combination, with a frame, A, made in two parts, each part having one end resting on the ground and both parts having their opposite ends connected by a hinged joint, of a seat resting upon the frame between the two supporting ends, whereby the weight of the operator serves to keep the joint firm, substan tially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

HENRY FRANCIS PARSONS. HUGO BORCHARDT. Witnesses:

JAMES WILsON, DAVID B. LocKwooD. 

